<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>层叠顺序研究 - 左定宽 右自适应的两列布局</title>
    <style>
        /* overflow：hidden + margin-left  +  inline-block */
        .left {
            float:left;
            width: 200px;
            height: 600px;
            background-color: goldenrod;
        }

        .right {
            height: 800px;
            background-color: red;
        }
    </style>
</head>

<body>
    <!-- 两列布局 -->
    <div class="parent">
        <div class="left"></div>
        <div class="right"></div>
    </div>
</body>

</html>